Just want to share and as a note for me, so i’m not forgetting how to solve it if i reinstall my system again.
If you have sound problem with Realtek (ALSA) in jaunty. Go here
Then go to : Downloads > Computer Peripheral ICs > PC Audio Codecs > High Definition Audio Codecs > Software
Select Linux driver. Download. Installed it with the script inside it, then reboot.
After reboot, type “alsamixer” in terminal. Remember all mixer channels are muted by default. Unmuted it by pressing “m” and increase the sound by pressing up-arrow. Tested and working in my system with Gigabyte P965-DS3P and P35-DS3P. Good Luck….